Kachur, I. S. ., Kurnosov, V. S. ., & Piryatinskaya, V. G. . (2024). Inversion of exchange interaction sign of Nd³⁺ excited states and its manifestation in optical absorption spectra of NdFe₃(BO₃)₄ crystal. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 50(5), 465–468. вилучено із http://fnt.ilt.kharkov.ua/index.php/fnt/article/view/9238